Caldwell Channel Balance

A home owner from California says:
I need several Caldwell Series VS-5A channel balance replacements, but cannot determine which option. MFGR RYL-017-1. MST 4-0 x 6-0. 1/2" wide. 5/8" deep. 34" long. Appears to be Series 350 because shoe 15-004, top 19-002, and top sash guide 18-110 match shape and dimensions of what I have. The Caldwell channel is stamped 33 4 HP. The non-tilting sliding window is 48" x 36". The sliding bottom portion of the window weighs 24.5 lbs. Please help me confirm the correct replacement balance.
Thanks, Scott
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Mike from SWISCO responded:
Thanks for posting, Scott.

Without seeing your balance attachments, and going with what you believe are the correct balance attachments, the S350-34 Channel Balance with stamp option 3340 appears to be the replacement you're looking for.
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